{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\toprule
          &(No challenger)&Runner-up has not prosecuted&Runner-up has prosecuted&    Total\\
\midrule
Winner has not prosecuted&        5&        2&        8&       15\\
          &      (4)&      (2)&      (7)&     (13)\\
\addlinespace
Winner has prosecuted&       58&        8&       35&      101\\
          &     (50)&      (7)&     (30)&     (87)\\
\addlinespace
Total     &       63&       10&       43&      116\\
          &     (54)&      (9)&     (37)&    (100)\\
\bottomrule
\end{tabular}
}
